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Recent trends in engine development introduced for improved efficiency, performance and environmental friendliness are having a significant effect on cylinder head gasket performance. The customers' expectations of gaskets continue to increase in the recognition that gaskets are essential parts of an engine, not simply standard accessories. Gaskets have a great influence on the performance of the engine in relation to power, gaseous and noise emissions and reliability; also on the reduction of weight. The aim of T&N's Automotive Sealing Group is to design and supply gaskets that continue to satisfy the customers' requirements. Traditional fibre-based gaskets continue to provide a cost-effective solution to the sealing problems of many conventional engines. However, it has been found necessary to develop metal-based technologies to give the best available answer to the range of current concerns such as low emissions, low noise, durability, effective sealing, reduced system costs and legislative requirements.
Metal-based gasket design technology
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Steels are essentially alloys of carbon with iron; silicon and manganese are added in the process of manufacture for well-known reasons. Alloy steels are simply steels to which other elements or an excess of silicon and manganese have been added. Until about twenty years ago alloys were practically